Index: wordpress.org/public_html/wp-content/themes/pub/wporg-breathe/functions.php
===================================================================
--- wordpress.org/public_html/wp-content/themes/pub/wporg-breathe/functions.php	(revision 5620)
+++ wordpress.org/public_html/wp-content/themes/pub/wporg-breathe/functions.php	(working copy)
@@ -150,3 +150,13 @@
 	return $args;
 }
 add_filter( 'nav_menu_item_args', __NAMESPACE__ . '\add_screen_reader_text_for_icon_menu_items', 10, 2 );
+
+/**
+ * Disables the P2 Mentions on any handbook page.
+ */
+function wporg_p2_disable_mentions_for_handbooks() {
+	if ( is_singular( 'handbook' ) && ! is_single( 'credits' ) ) {
+		add_action( 'p2_found_mentions', '__return_empty_array', 100 );
+	}
+}
+add_action( 'wp', 'wporg_p2_disable_mentions_for_handbooks' );